body, ul, h1, h2, h3, h4, h5, h6 {
    margin: 0;
    padding: 0
}

ul {
    list-style: none;
}

html, body, #app, .container, .el-container {
    height: 100%
}

.el-menu--collapse .el-submenu__title span {
    height: 0;
    width: 0;
    overflow: hidden;
    visibility: hidden;
    display: inline-block;
}

.el-menu--collapse .el-menu-item .el-submenu__icon-arrow, .el-menu--collapse .el-submenu .el-submenu__title .el-submenu__icon-arrow {
    display: none;
}

.el-menu-item-group .el-menu-item {
    padding: 0 0 0 30px;
}

.el-menu-item-group .el-menu-item-group__title {
    padding: 0
}